Pattren Develpmont Flashcards
Top takeoff end boot and garbage chute are examples of
Triangulated fittings
The hypotenuse is a side on what kind of triangle?
Right angle triangle
Pythagorean equation is ?
A2 + b2 = c2
A face line is used when a triangulating ______________fitting ?
A. Ships ventilators
B. Right angled
C. Transitional Y branch
D. Top takeoff
C. Transitional y branch
A foreshortened line is ?
A line that appears to
Be shorter than it really is
A true length triangles horizontal leg is ?
A foreshortened dimension
Rectangular transitions are used to retro fit _______ to existing plenum ?
New furnace
Can the vertical height of a fitting include seams and allowances ?
Yes
Does the face like run 90 degrees to the secondary y branch opening ?
No
When determining the vh for a pattern what must be subtracted ?
All seams and allowances